MIGUEL A., B.; LIDIA, S. Slopes of trigonal fibred surfaces and of higher dimensional fibrations . ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 8, n. 4, p. 647-658, 2009. DOI: 10.2422/2036-2145.2009.4.02. Disponível em: http://20.103.181.36/index.php/annaliscienze/article/view/189. Acesso em: 28 may. 2025.